rule 34 2021 anthro ass digital media artwork duo eyebrow piercing facial piercing fin fin piercing fingers fish flat colors furgonomics furry specific piercing green body grey body hi res lamnid lamniform machine mako shark male malemale male penetrating marine muscular muscular male nose piercing nude penetration piercing rugie sex shark simple background smile synth vader san synthetic teeth text tourmaline shark tourmaline shark artist url 5356578